| /* VMPlainDatagramSocketImpl.c - Native methods for PlainDatagramSocketImpl |
| Copyright (C) 2005, 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| /* do not move; needed here because of some macro definitions */ |
| #include <config.h> |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <jni.h> |
| #include <jcl.h> |
| |
| #include "javanet.h" |
| |
| #include "target_native.h" |
| #ifndef WITHOUT_NETWORK |
| #include "target_native_network.h" |
| #endif /* WITHOUT_NETWORK */ |
| |
| |
| #include "gnu_java_net_VMPlainDatagramSocketImpl.h" |
| |
| /* |
| * Note that most of the functions in this module simply redirect to another |
| * internal function. Why? Because many of these functions are shared |
| * with PlainSocketImpl. |
| */ |
| |
| /*************************************************************************/ |
| |
| /* |
| * Creates a new datagram socket |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_create(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)) |
| , jobject obj) |
| { |
| |
| #ifndef WITHOUT_NETWORK |
| _javanet_create(env, obj, 0); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * Close the socket. |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_close(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj) |
| { |
| |
| #ifndef WITHOUT_NETWORK |
| _javanet_close(env, obj, 0); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * Connects to the specified destination. |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_connect(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jobject addr, jint port) |
| { |
| #ifndef WITHOUT_NETWORK |
| |
| _javanet_connect(env, obj, addr, port, 0); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * This method binds the specified address to the specified local port. |
| * Note that we have to set the local address and local port public instance |
| * variables. |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_bind(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jint port, jobject addr) |
| { |
| |
| #ifndef WITHOUT_NETWORK |
| _javanet_bind(env, obj, addr, port, 0); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * This method sets the specified option for a socket |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_setOption(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jint option_id, |
| jobject val) |
| { |
| |
| #ifndef WITHOUT_NETWORK |
| _javanet_set_option(env, obj, option_id, val); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * This method sets the specified option for a socket |
| */ |
| JNIEXPORT jobject JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_getOption(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jint option_id) |
| { |
| |
| #ifndef WITHOUT_NETWORK |
| return(_javanet_get_option(env, obj, option_id)); |
| #else /* not WITHOUT_NETWORK */ |
| return NULL; |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * Reads a buffer from a remote host |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_nativeReceive(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jbyteArray arr, |
| jint offset, |
| jint length, |
| jbyteArray receivedFromAddress, |
| jintArray receivedFromPort, |
| jintArray receivedLength) |
| { |
| #ifndef WITHOUT_NETWORK |
| int addr, *port, *bytes_read; |
| char *addressBytes; |
| |
| addr = 0; |
| |
| port = (int*)(*env)->GetIntArrayElements(env, receivedFromPort, NULL); |
| if (port == NULL) |
| { |
| JCL_ThrowException(env, IO_EXCEPTION, "Internal error: could not access receivedFromPort array"); |
| return; |
| } |
| |
| bytes_read = (int*)(*env)->GetIntArrayElements(env, receivedLength, NULL); |
| if (bytes_read == NULL) |
| { |
| (*env)->ReleaseIntArrayElements(env, receivedFromPort, (jint*)port, 0); |
| JCL_ThrowException(env, IO_EXCEPTION, "Internal error: could not access receivedLength array"); |
| return; |
| } |
| |
| /* Receive the packet */ |
| /* should we try some sort of validation on the length? */ |
| (*bytes_read) = _javanet_recvfrom(env, obj, arr, offset, length, &addr, port); |
| |
| /* Special case the strange situation where the receiver didn't want any |
| bytes. */ |
| if (length == 0 && (*bytes_read) == -1) |
| *bytes_read = 0; |
| |
| if ((*bytes_read) == -1) |
| { |
| (*env)->ReleaseIntArrayElements(env, receivedFromPort, (jint*)port, 0); |
| (*env)->ReleaseIntArrayElements(env, receivedLength, (jint*)bytes_read, 0); |
| JCL_ThrowException(env, IO_EXCEPTION, "Internal error: receive"); |
| return; |
| } |
| |
| (*env)->ReleaseIntArrayElements(env, receivedFromPort, (jint*)port, 0); |
| (*env)->ReleaseIntArrayElements(env, receivedLength, (jint*)bytes_read, 0); |
| |
| if ((*env)->ExceptionOccurred(env)) |
| { |
| return; |
| } |
| |
| DBG("PlainDatagramSocketImpl.receive(): Received packet\n"); |
| |
| |
| /* Store the address */ |
| addressBytes = (char*)(*env)->GetPrimitiveArrayCritical(env, receivedFromAddress, NULL); |
| TARGET_NATIVE_NETWORK_INT_TO_IPADDRESS_BYTES(addr, |
| addressBytes[0], |
| addressBytes[1], |
| addressBytes[2], |
| addressBytes[3] |
| ); |
| (*env)->ReleasePrimitiveArrayCritical(env, receivedFromAddress, addressBytes, 0); |
| |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * Writes a buffer to the remote host |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_nativeSendTo(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jobject addr, |
| jint port, |
| jarray buf, |
| jint offset, |
| jint len) |
| { |
| #ifndef WITHOUT_NETWORK |
| jint netAddress; |
| |
| /* check if address given, tr 7.3.2005 */ |
| if (addr != NULL) |
| { |
| netAddress = _javanet_get_netaddr(env, addr); |
| if ((*env)->ExceptionOccurred(env)) |
| { |
| return; |
| } |
| } |
| else |
| { |
| netAddress = 0; |
| } |
| |
| DBG("PlainDatagramSocketImpl.sendto(): have addr\n"); |
| |
| _javanet_sendto(env, obj, buf, offset, len, netAddress, port); |
| if ((*env)->ExceptionOccurred(env)) |
| { |
| return; |
| } |
| |
| DBG("PlainDatagramSocketImpl.sendto(): finished\n"); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * Joins a multicast group |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_join(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jobject addr) |
| { |
| #ifndef WITHOUT_NETWORK |
| jint netAddress; |
| int fd; |
| int result; |
| |
| /* check if address given, tr 7.3.2005 */ |
| if (addr != NULL) |
| { |
| netAddress = _javanet_get_netaddr(env, addr); |
| if ((*env)->ExceptionOccurred(env)) |
| { |
| JCL_ThrowException(env, IO_EXCEPTION, "Internal error"); |
| return; |
| } |
| } |
| else |
| { |
| netAddress = 0; |
| } |
| |
| fd = _javanet_get_int_field(env, obj, "native_fd"); |
| if ((*env)->ExceptionOccurred(env)) |
| { |
| JCL_ThrowException(env, IO_EXCEPTION, "Internal error"); |
| return; |
| } |
| |
| DBG("PlainDatagramSocketImpl.join(): have native fd\n"); |
| |
| TARGET_NATIVE_NETWORK_SOCKET_SET_OPTION_ADD_MEMBERSHIP(fd,netAddress,result); |
| |
| if (result != TARGET_NATIVE_OK) |
| { |
| JCL_ThrowException(env, IO_EXCEPTION, TARGET_NATIVE_LAST_ERROR_STRING()); |
| return; |
| } |
| |
| DBG("PlainDatagramSocketImpl.join(): finished\n"); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
| /*************************************************************************/ |
| |
| /* |
| * Leaves a multicast group |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_net_VMPlainDatagramSocketImpl_leave(JNIEnv *env, |
| jclass klass __attribute__ ((__unused__)), |
| jobject obj, |
| jobject addr) |
| { |
| #ifndef WITHOUT_NETWORK |
| jint netAddress; |
| int fd; |
| int result; |
| |
| /* check if address given, tr 7.3.2005 */ |
| if (addr != NULL) |
| { |
| netAddress = _javanet_get_netaddr(env, addr); |
| if ((*env)->ExceptionOccurred(env)) |
| { |
| JCL_ThrowException(env, IO_EXCEPTION, "Internal error"); |
| return; |
| } |
| } |
| else |
| { |
| netAddress = 0; |
| } |
| |
| fd = _javanet_get_int_field(env, obj, "native_fd"); |
| if ((*env)->ExceptionOccurred(env)) |
| { JCL_ThrowException(env, IO_EXCEPTION, "Internal error"); return; } |
| |
| DBG("PlainDatagramSocketImpl.leave(): have native fd\n"); |
| |
| TARGET_NATIVE_NETWORK_SOCKET_SET_OPTION_DROP_MEMBERSHIP(fd,netAddress,result); |
| if (result!=TARGET_NATIVE_OK) |
| { |
| JCL_ThrowException(env, IO_EXCEPTION, TARGET_NATIVE_LAST_ERROR_STRING()); |
| return; |
| } |
| |
| DBG("PlainDatagramSocketImpl.leave(): finished\n"); |
| #else /* not WITHOUT_NETWORK */ |
| #endif /* not WITHOUT_NETWORK */ |
| } |
| |
